consort c93x manual

C931C932C933

May 2006

Consort

MANUAL

HANDLEIDING

MODE D’EMPLOI

ANLEITUNG

Distributor:Topac Inc231 CJC HighwayCohassetMA 02025Tel 781 740 8778Fax 781 740 8779www.topac.comemail [email protected]

C93x èwww.consort.be 2 / 39


DECLARATION OF CONFORMITY

We declare under our sole responsibility that the product

Multi-channel analysers

content of the type numbers

C931, C932, C933

to which this declaration relates is in conformity

with the following standards

EN61010

LOW VOLTAGE DIRECTIVE 73/23/EEG

EN50081-1

EN50082-1

EN60555-2

EMC DIRECTIVE 89/336/EEG

Turnhout, March 27, 2003

on behalf of CONSORT nv

WARRANTY CERTIFICATE

This instrument (excluding all accessories) is warranted against defective material and workmanship for a period of thirty-six (36) months from the date of shipment ex fac-tory.

CONSORT will repair all defective equipment returned to it during the warranty period without charge, provided the equipment has been used under normal laboratory condi-tions and in accordance with the operating limitations and maintenance procedures in this instruction manual and when not having been subject to accident, alteration, misuse or abuse.

A return authorisation must be obtained from CONSORT before returning any product for warranty repair on a freight prepaid basis!


Table of contentsIntroduction ...................................... 6Manufacturer ..................................... 6Warranty .......................................... 6Servicing........................................... 6Batteries .......................................... 6AC adaptor ........................................ 6Keyboard .......................................... 6Inputs .............................................. 7Recorder output.................................. 7Digital output..................................... 7System ............................................. 7Date and Time.................................... 7Recorder........................................... 7Password .......................................... 7Important ......................................... 8pH measurement................................. 8mV measurement ................................ 8Temperature measurement .................... 8Conductivity measurement..................... 9Resistivity measurement........................ 9Salinity measurement ........................... 9TDS measurement ............................... 9Dissolved oxygen measurement ............... 10%O2 measurement ............................... 10Air pressure measurement ..................... 10Interferences ..................................... 10Principle ........................................... 10Maintenance of pH electrodes................. 11Maintenance of metal electrodes ............. 11Maintenance of conductivity electrodes ..... 11Maintenance of oxygen electrodes............ 11Ion measurement ................................ 12GLP................................................. 12Calibration reminder ............................ 12Data-logging ...................................... 13RS232 .............................................. 13

InhoudstafelInleiding ........................................... 14Fabrikant .......................................... 14Waarborg .......................................... 14Onderhoud ........................................ 14Batterijen ......................................... 14Netadapter........................................ 14Toetsenbord....................................... 14Ingangen........................................... 15Schrijveruitgang.................................. 15Digitale uitgang .................................. 15Systeem ........................................... 15Datum en Tijd .................................... 15Schrijver........................................... 15Wachtwoord ...................................... 15Belangrijk ......................................... 16pH-meting......................................... 16mV-meting ........................................ 16Temperatuurmeting ............................. 16Geleidbaarheidsmeting ......................... 17Resistiviteitsmeting.............................. 17Saliniteitsmeting ................................. 17TDS-meting ....................................... 17Opgeloste-zuurstof-meting ..................... 18%O2-meting ....................................... 18Luchtdrukmeting................................. 18Principe............................................ 18Interferenties..................................... 18Onderhoud van pH elektroden................. 19Onderhoud van metaalelektroden ............ 19Onderhoud van geleidbaarheidscellen ....... 19Onderhoud van zuurstofelektroden ........... 19Ion-meting ........................................ 20GLP................................................. 20IJkwaarschuwing ................................. 20Data-opslag ....................................... 21RS232 .............................................. 21

electrode input

temperature input

recorder ouput

RS232 interface

DC adaptor input

reference input


BatteriesThe batteries can be replaced by opening the bottom compartment of the cabinet. Only use NiMH batteries!

AC adaptorRemove the protective silicone stopper from the DC socket and connect the jack of a suitable AC adaptor (model A4070 for 230 V~ or model A4071 for 120 V~) to the DC socket for recharging the NiMH batteries. Avoid to use an AC adaptor without NiMH batteries being inserted in the instrument! For field work, remove the adaptor and re-insert the protective silicone stopper into the DC socket. Do not hold the adaptor by wet hand!

IntroductionThis instrument is manufactured with the latest technology and needs no particu-lar maintenance. Consort certifies that this instrument was thoroughly inspected and tested at the factory prior to shipment and found to meet all requirements defined by contract under which it is furnished. However, dimensions and other physical characteristics may differ.The normal operating temperature should be between 0° and 40°C. Never use the instrument in a room with high humidity (>95 %) or at very low temperatures (condensation water!).

ManufacturerConsort nvParklaan 36 Tel (+32)(14)41 12 79B2300 Turnhout Fax (+32)(14)42 91 79Belgium E-mail: [email protected]

WarrantyThis instrument (excluding all accessories) is warranted against defective material and workmanship for a period of thirty-six (36) months from the date of shipment ex factory. Consort will repair all defective equipment returned to it during the warranty period without charge, provided the equipment has been used under normal laboratory conditions and in accordance with the operating limitations and maintenance procedures in this instruction manual and when not having been subject to accident, alteration, misuse or abuse. A return authorisation must be obtained from Consort before returning any product for warranty repair on a freight prepaid basis!Consort is not liable for consequential damages arising out of the use or handling of its products.

ServicingIn the event of this instrument being returned for servicing, the owner is requested to remove the power supply lead and NOT to send the following items unless they are suspect:ManualCablesAccessoriesIf serious malfunctioning occurs, stop using the unit immediately and consult your local Consort dealer.

KeyboardMODE = Selects all modes or escapes from error traps, calibration procedures,

etc..by returning to the original mode.çèéê = Button for entering a value or for selecting a function.CAL = Starts or proceeds a calibration or a function.PRINT = Displayed value is printed through the RS232 output.HELP = Built-in manual.HOLD = Holds display when measuring.ON/OFF = Switches the instrument on or off.


InputsThe measuring electrode should be connected to the coaxial INPUT connector. If separate electrodes are used, connect the reference electrode to the REF. ter-minal. Automatic temperature compensation and temperature measurements are possible by plugging a Pt1000 temperature probe into the °C terminals. You can also use a combination pH electrode with built-in Pt1000. Its banana plugs should be inserted in the °C terminals. Without Pt1000, the manual temperature compen-sation is automatically switched on.

Recorder outputA recorder can be connected to the red (+) and black (-) terminals. Use only labora-tory recorders with a high input impedance!

Digital outputA standard RS232 output terminal (DP9) is provided for interfacing the instru-ment with a printer or computer. Data is sent in the ASCII code at a BAUD rate of 300...9600 bps (8 bit, no parity, 1 stopbit).

Serial port pinout specifications:pin 1 : connected to pin 4 and pin 6pin 2 : TxD, transmit datapin 3 : RxD, receive datapin 4 : connected to pin 1 and pin 6pin 5 : Gnd, signal groundpin 6 : connected to pin 1 and pin 4pin 7 : connected to pin 8pin 8 : connected to pin 7pin 9 : not connected

System1. Select [MENU] by pressing MODE.2. Select [SYSTEM] and press CAL.3. Follow the instructions on the screen to adjust language, contrast and automa-

tic power-off timer.

Password1. Select [MENU] by pressing MODE.2. Select [PASSWORD] and press CAL.3. A private code can be programmed to avoid undesired access to the instru-

ment. Choose [YES] and press CAL to enter your secret sequence of 5 keys.

Date and Time1. Select [MENU] by pressing MODE.2. Select [DATE/TIME] and press CAL.3. Adjust the date and press CAL to adjust the date.4. Adjust the time and press CAL to adjust the time.

Recorder1. Select [MENU] by pressing MODE.2. Select [RECORDER] and press CAL.3. Select the desired channel and press CAL.4. Select the desired range and press CAL (only for conductivity).5. Select the desired minimum level corresponding to a 0 V recorder output and

press CAL.6. Select the desired maximum level corresponding to a 2 V recorder output and

press CAL.


pH measurement1. Select [pH] by pressing MODE. The display will immediately show the measured

value according to the previous calibration. Should you want to recalibrate, press CAL.

2. The display shows up to five of the 9 buffers in memory, e.g. [7.00] and [4.00]. Select the proper values or enter manually special values and press CAL. The unused buffers should be switched off.

3. Rinse the electrodes with distilled water and immerse them in the first buffer solution. Select [CALIBRATE], press CAL and follow the instructions on the screen until the calibration is finished.

4. After rinsing the electrodes with distilled water, immerse them in the samples and read the display.

5. Rinse the electrodes always with distilled water after use and store them in a 3...4 M KCl solution.

Using pH electrodes with an abnormal zero point:1. Select [E0 = x mV] and press CAL.2. Enter the zero point of the electrode and press CAL.

• Press ê to change the resolution from 0.1 to 0.001 pH.

Temperature measurement1. Select [°C] by pressing MODE. Without Pt1000, adjust the manual temperature

compensation and proceed by pressing MODE. Should you want to recalibrate, press CAL.

2. Immerse the Pt1000 in a standard solution of known temperature. Calibrate to the proper value and press CAL.

mV measurement1. Select [mV] by pressing MODE. The display will immediately show the meas-

ured value according to the previous calibration. Should you want to recali-brate, press CAL.

2. Immerse the electrodes in a standard solution of known potential, adjust to the proper value and press CAL.

• Press ê to change the resolution from 1 to 0.1 mV.

Important• A blinking decimal point warns you for unstable measurements. Wait to read

the display!• Stirring the solution during the measurements promotes the homogeneity and

is obligatory!• The instrument will refuse automatic calibration when the electrode is unsta-

ble. Insufficient stirring or a worn electrode may be the cause.


Conductivity measurementMeasurement:1. Select [S/cm] by pressing MODE. The display will immediately show the meas-


2. The display shows the three standards in memory. Select the proper values or enter manually special values and press CAL. The unused standards should be switched off.

3. Select the temperature to which all future measurements will be referred to (REF=25°C) and press CAL.

4. Select whether or not automatic temperature compensation (ATC) should be applied and press CAL.

5. After rinsing the electrode several times with the first standard solution, immerse it in that standard. The solution temperature is not so critical but should lie between 0°C and 30°C. When no Pt1000 is used, do not forget to compensate manually first! Select [CALIBRATE], press CAL and follow the instructions on the screen until the calibration is finished.

6. Rinse the electrode several times with the sample, immerse it in that solution and read the display.

7. Rinse the electrode always after use and store it in distilled water (add some detergent to keep the spongy platinum surface in perfect condition).

• When starting a titration, press ê to lock the actual range and avoid cross-over errors due to differences in the measuring frequency. Press MODE to return to the normal measuring mode.

Capacitive compensation:1. Capacitive compensation increases accuracy in the very low conductiv-

ity ranges (<10 µS/cm). Select whether or not this compensation should be applied. Verify if the attached electrode is completely dry and press CAL. Select [COMP.ON] or [COMP.OFF] and press CAL. Follow the instructions on the screen.

TDS measurement1. Select [TDS] by pressing MODE. The display will immediately show the meas-

ured value according to the previous calibration. Should you want to recali-brate, press CAL. Proceed as for conductivity.

Resistivity measurement1. Select [Ω.cm] by pressing MODE. The display will immediately show the meas-


Salinity measurement1. Select [SAL] by pressing MODE. The display will immediately show the meas-



Dissolved oxygen measurement1. Select [O2] by pressing MODE. The display will immediately show the measured

value according to the previous calibration. Should you want to recalibrate, press CAL.

2. The display shows the salinity correction. Select the proper value and press CAL. Leave salinity correction to zero unless you are going to measure in heavily salted solutions such as e.g. sea-water (35 g/l). Select [CALIBRATE], press CAL and follow the instructions on the screen until the calibration is finished.

3. The electrode exposed to the air reaches an equilibrium corresponding to the partial pressure of oxygen and thus to saturation in water at the given temper-ature. The instrument shows the measured saturation, current, temperature, and will calibrate automatically when readings are stable.

4. After rinsing the electrodes with distilled water, immerse them in the samples and read the display. Stirring the solution during the measurements promotes the homogeneity and is obligatory! The advection rate must be at least 10 cm/s.

5. Rinse the electrode always after use and store it in distilled water.

• A blinking decimal point warns you for unstable measurements. Wait to read the display!

• Stirring the solution during the measurements promotes the homogeneity and is therefore always recommended.

• Press ê to change the resolution from 0.1 to 0.01 mg/l or from 1 to 0.1 %.

InterferencesAll substances which can diffuse through the membrane and for which 800 mV poten-tial suffices for polarographic reduction, will be reduced in the electrode. This will give a corresponding current contribution, if they are present. Interference can be caused by ions entering the electrode through porous or mechanically damaged membranes and by diffusion of other reactive gases apart from oxygen, e.g. CO2, Cl2, SO2, and H2S. These substances react in undesired manner with the electrode. Acidic or basic gases change the pH value of the electrolyte solution and thus dis-turb the reading, particularly when measuring small oxygen concentrations. High salt concentrations in the sample solution can falsify readings too.

%O2 measurement1. Select [%O2] by pressing MODE. The display will immediately show the meas-

ured value according to the previous calibration. Should you want to recali-brate, press CAL. Proceed as for mg/l.

Air pressure measurement1. Select [hPa] by pressing MODE. Should you want to recalibrate, press CAL.2. Adjust to the real air pressure and press CAL.

PrincipleThe oxygenmeter and its electrode function according to the Clark principle with silver as cathode and lead as anode in an electrolyte cell. Oxygen gas present in the electrolyte is reduced to OH ions at the cathode. The resulting current is diffusion limited and therefore proportional to the oxygen concentration in the sample solution. This current is amplified, corrected, and displayed in mg/l, ppm or % dissolved oxygen.

(C932, C933)

(C932, C933)

(C932, C933)

(C932, C933)

(C932, C933)


Maintenance of pH electrodesA pH electrode is active and stable only after wetting! For this purpose it must be immersed for at least ten hours in a 3...4 M KCl solution. During short inter-ruptions (e.g. storage) the electrode should be immersed in a 3...4 M KCl solution. In doing this it is always kept ready for use. When the interruption is longer than a month, refill the closing cap with 3...4 M KCl and plug it on the electrode tip in order to protect the glass bulb. Before use, ensure that the reference part of the electrode is topped up with a 3...4 M KCl solution.Avoid a low pressure inside the electrode! Therefore always remove the closure from the refilling aperture during the measurements as well as during the calibra-tion. This allows the saltbridge solution to flow through the ceramic liquid junction and prevents contamination of the electrolyte. For the same reason, the inside level should always be higher than the outside level of the measuring solution. Close the refilling aperture again when storing the electrode.A polluted electrode may be cleaned with a soft detergent or 0.1 M HCl. Greasy substances may be removed with acetone or alcohol (never do this with plastic electrodes!).If the electrode is polluted by proteinaceous materials (such as blood), it should stand in a cleaning solution overnight and then be cleaned with distilled water before use. The pH electrode wears away by being used. If the electrode tends to respond slower and calibration becomes difficult, even after cleaning, it should be replaced by a new one.

Maintenance of oxygen electrodesA dissolved oxygen electrode is active and stable only when polarised! The electrode body has almost unlimited life and requires no maintenance. After pro-longed use of the electrode, it may become deactivated. An indication is that the electrode no longer responds correctly to calibration. In this case:

1. Carefully screw off the measuring head.2. Cautiously remove the precipitated deposits with the aid of filter paper. Do

not use grinding paper or a glass fibre!3. Rinse several times with distilled water and shake carefully off the water

drops.4. Take the measuring head, fill it with new electrolyte solution and very slowly

screw it onto the electrode while holding it vertically.5. Let the electrode rest for a few hours! The electrode is now ready for use

again.

• Replace the membrane only when damaged, not when calibration is no longer possible!

Maintenance of metal electrodesMetal electrodes (Pt, Ag, Au): Metal electrodes are always ready for use. During short interruptions they are immersed in distilled water. They should be cleaned regularly:• Silver electrodes are immersed in a concentrated ammonia solution during one

hour.• Platinum or gold electrodes are immersed in concentrated nitric acid during

one hour.

Maintenance of conductivity electrodesA conductivity cell is active and stable only after wetting! For this purpose it must be immersed for at least one hour in distilled water. Rinse the cell always after use and store it in distilled water (add some detergent to keep the spongy platinum surface in perfect condition).A polluted cell may be cleaned with a soft detergent or diluted nitric acid. Greasy substances may be removed with acetone or alcohol (never do this with plastic electrodes!).


Ion measurement1. Select [ION] by pressing MODE. The display will immediately show the meas-


2. Select two proper standards from the values in memory, covering your future measuring range, and press CAL.

3. Select [CALIBRATE] and press CAL.4. After rinsing the electrodes with distilled water, immerse them in the first

standard solution. Select the first calibration value and press CAL when read-ings are stable. Go on in the same way with the second standard solution.

5. Decide whether a blank correction should be carried out or not. Follow the instructions on the screen. After rinsing the electrodes with distilled water, immerse them in a blank solution. When readings are stable press CAL.

6. Rinse the electrodes with distilled water, immerse them in the samples, and read the concentration on the display.

• Maintenance: we refer to the manual supplied with the ion specific elec-trodes.

GLP1. Select the desired range by pressing MODE and then press CAL.2. Select [GLP] and press CAL.3. Select [SHOW REPORT] and press CAL. Browse with çèéê to show a com-

plete calibration report. Press PRINT to print the report.

pH/mV/Conductivity/°C-meter C931--------------------------------Date : 15/05/2003Time : 11:32:04Version : 1.0

SETTINGS--------Identification No : 003Password : OFFpH/°C correction : OFFTemp. probe : ---Manual temp. (°C) : 22.6

pH CALIBRATION--------------Date : 15/05/2003Time : 11:20:06Eo (mV) : 0

Buffer 4.008/6.865Slope (%) : 98.4Zero point (pH) : 6.871

Buffer 6.865/9.180Slope (%) : 98.2Zero point (pH) : 6.879

AVERAGE VALUES--------------Slope (%) : 98.3Zero point (pH) : 6.875Response time (s) : 11Temperature (°C) : 22.6

STATISTICS----------Slope (%) : +0.4Zero point (pH) : +0.002Response time (s) : -1

Calibration reminder1. Select the desired range by pressing MODE and then press CAL.2. Select [INTERVAL] and press CAL.3. Select the desired time interval between each automatic warning for a new

calibration of the electrodes and press CAL.

(C933)


Data-logging1. Select [MENU] by pressing MODE.2. Select [DATALOGGER] and press CAL.

Start the data-logging:1. Select [STORE] and press CAL.2. Select [RANGE] and press CAL.3. Select the desired range and press CAL.4. Select [INTERVAL] and press CAL.5. Select the desired time interval between the data-logging and press CAL.6. Select [NUMBER] and press CAL.7. Select the desired number of values to be data-logged and press CAL.8. Select [START] and press CAL.9. Starts the data-logging according to the previous settings while a blinking

[LOG] appears. When manual data-logging has been selected, press PRINT to put a next measurement into memory. In the meantime the display shows the logging-number e.g. [#0027].

View the stored values on the display:1. Select [RECALL] and press CAL.2. Select [TABLE] or [PRINT] to display or print the stored data and press CAL to

continue. Follow the instructions on the screen.

Erase the stored values:1. Select [ERASE] and press CAL. Follow the instructions on the screen.

RS2321. Select [MENU] by pressing MODE.2. Select [RS232] and press CAL.3. Select [BAUDRATE] and press CAL.4. Select the desired baudrate and press CAL.5. Select [INTERVAL] and press CAL.6. Select the desired interval between the transmitted data and press CAL. Pre-

set to zero if no automatic transmitting is required.7. Select [IDENTIF. No.] and press CAL.8. Enter an indentification number for the transmitted data and press CAL.

Specifications C931 C932 C933

pH Range -2...+16 pH -2...+16 pH -2...+16 pHResolution 0.001 pH 0.001 pH 0.001 pHAccuracy 0.1% ± 1 digit 0.1% ± 1 digit 0.1% ± 1 digitCalibration 1...5 points 1...5 points 1...5 pointsBuffers 9 pre-programmed

5 user specified9 pre-programmed5 user specified

9 pre-programmed5 user specified

Temperature Compensation -30...+130°C -30...+130°C -30...+130°CISO-pH 6...8 pH 6...8 pH 6...8 pHSlope 80...120% 80...120% 80...120%Zero Point (Eo) ±999 mV ±999 mV ±999 mV

mV Range ±2000 mV ±2000 mV ±2000 mVResolution 0.1 mV 0.1 mV 0.1 mVAccuracy 0.1% ± 1 digit 0.1% ± 1 digit 0.1% ± 1 digitCalibration 1 point 1 point 1 point

ION Range 0.01 ng/l...100 g/lResolution 3 digitsAccuracy 0.5% ± 1 digitCalibration 2 points + blank

CONDUCTIVITY Range 0...2000 mS/cm 0...2000 mS/cm 0...2000 mS/cmResolution 0.001 µS/cm 0.001 µS/cm 0.001 µS/cmAccuracy 0.5% f.s. of range 0.5% f.s. of range 0.5% f.s. of rangeCalibration 1...3 points 1...3 points 1...3 pointsStandards 0.01/0.1/1 M KCl, 3 user specified 0.01/0.1/1 M KCl, 3 user specified 0.01/0.1/1 M KCl, 3 user specifiedCell Constant 0.05...15.0 cm-1 0.05...15.0 cm-1 0.05...15.0 cm-1

Temperature Compensation -30...+130°C -30...+130°C -30...+130°CReference Temperature 20° or 25°C 20° or 25°C 20° or 25°CTemperature Coefficient natural waters (EN27888) natural waters (EN27888) natural waters (EN27888)Range Lock ü ü ü

Capacitive Compensation ü ü ü

RESISTIVITY Range 0...200 MΩ.cm 0...200 MΩ.cm 0...200 MΩ.cmResolution 1 Ω.cm 1 Ω.cm 1 Ω.cm

SALINITY Range 0...70 ppt 0...70 ppt 0...70 pptResolution 0.1 ppt 0.1 ppt 0.1 ppt

TDS Range 0...100 g/l 0...100 g/l 0...100 g/lResolution 0.01 mg/l 0.01 mg/l 0.01 mg/l

DISSOLVED OXYGEN Range 0...60 mg/l (0...600%) 0...60 mg/l (0...600%)Resolution 0.01 mg/l (0.1%) 0.01 mg/l (0.1%)Accuracy 1% ± 1 digit 1% ± 1 digitCalibration 1 point 1 pointTemperature Compensation 0...50°C 0...50°CAir Pressure Compensation 800...1100 hPa, automatic 800...1100 hPa, automatic

TEMPERATURE Range -30...+130°C -30...+130°C -30...+130°CResolution 0.1°C 0.1°C 0.1°CAccuracy 0.3°C 0.3°C 0.3°CCalibration ±10°C ±10°C ±10°C

AIR PRESSURE Range 800...1100 hPa 800...1100 hPaCalibration 1 point 1 point

INPUTS Measurement BNC, 1012 Ω BNC, 1012 Ω BNC, 1012 ΩTemperature 2 banana, for Pt1000 2 banana, for Pt1000 2 banana, for Pt1000

CALIBRATION Reminder 0...999 h 0...999 h 0...999 hGLP ü ü ü

DISPLAY LCD 128x64 pixels 128x64 pixels 128x64 pixelsHold Function ü ü ü

Selectable Resolution ü ü ü

Real Time Clock ü ü ü

Languages EN, NL, FR, DE EN, NL, FR, DE EN, NL, FR, DERECORDER Output 0...2 V, programmable 0...2 V, programmable 0...2 V, programmableRS232 Baud Rate 300...19200 b/s 300...19200 b/s 300...19200 b/s

Interval 1...9999 s 1...9999 s 1...9999 sDATA-LOGGING Values 3600 + °C/date/time 3600 + °C/date/time 3600 + °C/date/time

Modes all (6) all (8) all (9)Manual or Timed ü ü ü

Interval 1...9999 s 1...9999 s 1...9999 sSECURITY Identification Number ü ü ü

Password Protection ü ü ü

POWER SUPPLY Mains 210...250 VAC 210...250 VAC 210...250 VACLow Voltage 9...15 VDC 9...15 VDC 9...15 VDCBatteries 4x1.2 V, AA, NiMH 4x1.2 V, AA, NiMH 4x1.2 V, AA, NiMH

DIMENSIONS WxDxH 12x25x5 cm 12x25x5 cm 12x25x5 cmWEIGHT Meter 600 g 600 g 600 g

consort c93x manual

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